This document specifies a method for determining the specific resistance to filtration of sludges, conditioned or non-conditioned.
This document is applicable to sludges and sludge suspensions from:
storm water handling;
urban wastewater collecting systems;
urban wastewater treatment plants;
treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271/EEC);
water supply treatment plants;
This method is also applicable to sludge and sludge suspensions of other origins.